diff options
| author | Guo Ren <guoren@linux.alibaba.com> | 2022-11-09 01:49:36 -0500 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-12-05 16:58:01 -0800 |
| commit | 5c3022e4a616d800cf5f4c3a981d7992179e44a1 (patch) | |
| tree | 79112c09f5036bfa9746e2ddfb0eb06963d891a7 | |
| parent | cbc32023ddbdf4baa3d9dc513a2184a84080a5a2 (diff) | |
riscv: stacktrace: Fixup ftrace_graph_ret_addr retp argument
The 'retp' is a pointer to the return address on the stack, so we
must pass the current return address pointer as the 'retp'
argument to ftrace_push_return_trace(). Not parent function's
return address on the stack.
Fixes: b785ec129bd9 ("riscv/ftrace: Add HAVE_FUNCTION_GRAPH_RET_ADDR_PTR support")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20221109064937.3643993-2-guoren@kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| -rw-r--r-- | arch/riscv/kernel/stacktrace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c index 08d11a53f39e..bcfe9eb55f80 100644 --- a/arch/riscv/kernel/stacktrace.c +++ b/arch/riscv/kernel/stacktrace.c @@ -58,7 +58,7 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, } else { fp = frame->fp; pc = ftrace_graph_ret_addr(current, NULL, frame->ra, - (unsigned long *)(fp - 8)); + &frame->ra); } } |